PREUN

/bin/sh

/usr/share/rpm-helper/del-service udhcp $1 udhcpd

POSTIN

/bin/sh

/usr/share/rpm-helper/add-service udhcp $1 udhcpd 
# New udhcpd lease file
if [ ! -f /var/lib/udhcpd/udhcpd.leases ]; then
    touch /var/lib/udhcpd/udhcpd.leases
fi